This is 55-year-old entrepreneur and former model Rande Gerber. He is reportedly worth $100 million (£77.5 million).

He was born in 1962 in Long Island and attended the University of Arizona where he earned a degree in marketing. He began his career in modeling before shifting to business.

Alongside his two brothers, he founded the successful Gerber Group chain of bars and restaurants, and is one of the founders of Casamigos with George Clooney, one of the fastest-growing tequila brands in the world.

He also happens to be the husband of supermodel Cindy Crawford. The couple have two children: Presley Walker and Kaia Jordan.

Jamie McCarthy / Getty

Both of their kids are models themselves. Presley has modeled for Dolce & Gabbana...

...while Kaia, who has 1.3 million followers on Instagram, has modeled for the likes of Alexander Wang.

Mother and daughter have even appeared on the cover of Vogue together.

Gerber met Crawford at a wedding when they were both dating other people. The pair married in 1998.

The couple live with their children in a beach house in Malibu, where Casamigos is based.

They also have two dogs.

This is the view from their pool...

...and the Jacuzzi, where Cindy and her friends drink tequila.

"That’s all they drink, on the rocks," Gerber tells us. "It's the healthier choice, and they know they won’t be hungover in the morning. They don’t get puffy form it which is important for [them]."

Gerber loves living and working on the beach. This is the Malibu headquarters of Casamigos.

"It’s nice for me but it’s also nice for the employees — it's nice to have offices by the beach, it puts you in a good mood," Gerber said.

The brand also has offices in New York and Arizona. "We do the design, marketing, social media... we control everything in-house," Gerber said.

"We have some great, young, passionate, talented people that work for us, most of whom have never been in the liquor business before. The majority were just fans of Casamigos."

Gerber also has a home office, though he's normally in headquarters by 10 a.m.

"I'm usually in there from around 10 a.m. to anywhere between 5 p.m. and 10 p.m.," he said.

"I don’t give my employees hours — some of them come in at 7 a.m., some at 10 a.m., some stay until 6 p.m. or midnight. They have that freedom to come and go as they wish, although they all put in more hours than your 9 to 5."

The office is a 'big open loft space' with pool and ping pong tables where nobody has a closed door.

"It has that social atmosphere," Gerber said. "Our employees love to be there."

It's easy to see why.

Casamigos was founded by accident in 2013, according to Gerber. He and Clooney came up with the idea while the two were spending time at their houses in Mexico.

Casamigos

Clooney and Gerber's houses sat beside each other on the piece of property, which was called Casamigos.

Casamigos

The homes sat on the development of friend and third business partner Mike Meldman.

"It felt like one compound," Gerber said. "We'd have a bunch of our friends there — breakfast at our place, lunch at his, dinner at ours. It felt like one big house."

While the pair recently sold their homes in Mexico. Gerber said they're looking at building new ones in the same place, and the family still visit.

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Coming up with the tequila involved lots of trial and error, which basically meant tequila tasting — and driving around on motorbikes through Mexico.

Casamigos

While Gerber now works full-time heading up Casamigos, the two still taste every batch.

Casamigos

"We all contribute an equal amount. Even though I run the company, we all play our own role," he said. "George is very involved in the business."

The friends met at one of Rande's bars nearly 30 years ago while George was shooting one of his first films in New York. They have since attended many events together, including the Venice Film Festival.

Frederic Nebinger / Getty

Crawford and Gerber were also present at George's wedding to human rights lawyer Amal Clooney in 2014.

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He says the two couples are good friends. They drink many bottles of Casamigos together.

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"I’m always passing ideas by Cindy and Amal does the same," Gerber said. "The four of us don’t sit in business meetings but we’ll sit over a bottle of Casamigos and talk about what’s happening."

He and George recently celebrated their birthdays together.

They also still go on 'boys trips.'

They aren't the only A-listers Gerber and Crawford rub shoulders with, though. Here they are with Pierce Brosnan at the Malibu Boys And Girls Club Gala in 2013...

David Buchan / Getty

...and with Rashida Jones at the Helmut Newton opening night exhibit at Annenberg Space For Photography in Century City, California.

Mike Windle / Getty

They attend some of the best parties in America. Here they are on the red carpet at the Golden Globes in 2015...

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...and at the Tom Ford fashion show during New York Fashion Week in September 2016.

Frazer Harrison / Getty

Gerber said that many nights during the week "we have events that we need to go to or we’re out with friends for dinner."

When he travels, he travels in style. This is his car...

...and his motorbike.

The couple also look pretty fabulous when they fly.

Gerber said they try to lead a 'typical normal family life, but on the beach.' This involves hikes...

...golf...

...or trips to their lake house.

The fridge at the lake house is fully stocked for visitors.

"On weekends we try and stay around the house, have a BBQ, have friends over," Gerber said.

A game of Scrabble also doesn't go amiss.

On weekday mornings, Gerber is up at 7 a.m. to have breakfast with the kids and occasionally Cindy. 'She gets up a little earlier than me,' he said.

Here's a pancake Cindy made for Presley and his friends.

He'll then try and get to the gym, for a hike, or a bike ride before work.

Whether or not he's just had dinner with his family or been out with Cindy, he goes to sleep really late.

"My mind starts to work creatively past 10 p.m. or 11 p.m. — all of a sudden there’s silence and my head starts going," he told Business Insider.

"I’m usually up until around 1 a.m. or 2 a.m. I don’t get much sleep — and I prefer it that way, writing notes and coming up with different ideas for two to three hours between 11 p.m. and 1 a.m. or 2 a.m."

'We spend so much of our time working, you should do something that you really love,' he said. 'You have to wake up every morning and be happy.'